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Ans- Polyester- is a category of polymers that contain the ester functional group in their main chain. As a specific material, it most commonly refers to a type called polyethylene
Displacement reaction - is the one wherein the atom or a set of atoms is displaced by another atom in a molecule. For instance, when iron is added to a copper sulphate solution, it displaces the copper metal. A + B-C → A-C + B. The above equation exists when A is more reactive than B.
Thermosetting plastic - is a polymer that irreversibly becomes rigid when heated. Such a material is also known as a thermoset or thermosetting polymer. Initially, the polymer is a liquid or soft solid. Heat provides energy for chemical reactions that increase the cross-linking between polymer chains, curing the plastic. The rate of curing may be increasing in many cases by increasing pressure or by adding a catalyst.
Carbon monoxide - is a colorless odorless very toxic gas CO that is formed as a product of the incomplete combustion of carbon or a carbon compound.
Malleability- The quality or state of being malleable: such as
a: capability of being shaped or extended by hammering, forging, etc.
the malleability of tin
b: capability of being influenced or altered by external forces
The malleability of memory … is the first reason why autobiographies should be taken with a grain of salt.
Acid rain- acid rain is a broad term that includes any form of precipitation with acidic components, such as sulfuric or nitric acid that fall to the ground from the atmosphere in wet or dry forms. This can include rain, snow, fog, hail or even dust that is acidic.
1.What is nylon.what it is used for?
Ans- Nylon is the most useful synthetic material with applications varying from daily life activities to industries. It is a plastic which can be drawn into fibres or moulded into daily products for making amenities.
The nylon blends are used for making swimwear, track pants, windbreakers etc. Other uses include parachutes, umbrellas, luggage, netting for veils etc. Because of its resistance to heat and cold, strong and lightweight nature, it's also used to make
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